Report shows large uncertainties in the analysis of model-based calculations of wet-weather discharges from point sources

Wednesday 24 Jul 19
|
by Camilla Bitsch

Contact

Luca Vezzaro
Associate Professor
DTU Environment
+4545 25 15 79

Contact

Karsten Arnbjerg-Nielsen
Professor
DTU Environment
+4545 25 14 50

Contact

Peter Steen Mikkelsen
Professor
DTU Environment
+4545 25 16 05
A report on "Uncertainty analysis of model-based calculations of wet-weather discharges from point sources" written by Luca Vezzaro and other researchers from DTU Environment, shows a very large uncertainty in the way the municipalities and the Danish EPA calculate the amount of untreated wastewater that runs into the nature.

From the preface of the report: "The Ministry of Environment and Food of Denmarkhas requested the Technical University of Denmark to provide an assessment of the uncertainty in the modelling results that are used for reporting of yearly pollutant loads from wet-weather discharges (separate storm sewer systems and combined sewer overflows). The focus was on the pollutants that are reported in the Punktkildedatabase (PULS database): organic matter (expressed as 5-days Biological Oxygen Demand), Nitrogen, and Phosphorous.The analysis investigated the objectivity of the model calculations and the possible sources of uncertainty. Additionally, another objective was the identification of potential improvements in the current modelling methods which (i) can lead to a reduction in the results uncertainty, and (ii) can be applied across all the Danish discharge points."

Download the report.

News and filters

Get updated on news that match your filter.
https://www.env.dtu.dk/english/about/news/nyhed?id=55C93F14-F95C-4D79-AFF2-E9E820658F9C
14 OCTOBER 2019